What is this a pauper company. Received a letter 5...

What is this a pauper company. Received a letter 5 days ago with a final reminder to pay Fedex. Mail them to receive the invoice which it concerns, because I have not received it. Do not you get it, because yes they simply do not respond to my e-mail. I get a letter today with 40, extra costs. A pauper gang this company. And I think I still put it into words.